DongHyeonkaandClaude Opus 5
b2963105a8
The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.
Follows the import procedure in README.md.
source/ the originating repository verbatim — 78 documents, 28 SVGs,
8 manifests, plus .source-revision recording the commit
final/ the SSOT
document.md 729 lines written from the 29 experiment documents, not
concatenated: what was predicted, what was measured, and
where the measurement itself was wrong
evidence/raw 125 outputs, flattened to <experiment>__<file> because
the originals collided (01-baseline.txt appeared three
times) and the audit only globs the top level
evidence/meta one per raw file; command and exitCode are null and the
README says why rather than inventing them
evidence/browser 22 captures
assets/ three diagrams through techviz
.techviz/ their VizSpecs
A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.
Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.
verify-pipeline.py passes. audit-records.py reports no issues.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2.9 KiB
kind, slug, title, topic, project, status, sourceRevision, rootTreeNode, evidenceCapturedOn, assets, evidence, source, module
| kind | slug | title | topic | project | status | sourceRevision | rootTreeNode | evidenceCapturedOn | assets | evidence | source | module | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CONCEPT | adapter-outbound-fileserver-c02 | 파싱은 되지만 우리가 쓰지 않았을 형태를 전부 거부한다 | schema-and-wire-models | clean-architecture-backend-template | 게시 전 | 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916 | concept:adapter-outbound-fileserver-c02 | 2026-09-01 |
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adapter-outbound-fileserver |
파싱은 되지만 우리가 쓰지 않았을 형태를 전부 거부한다
FileserverControlRecordCodec이 decode 직후 재encode해 바이트를 비교한다(requireCanonical(bytes, encodeOperation(record))).
본문
FileserverControlRecordCodec은 세 레코드와 receipt snapshot에 대해 decode 직후 재encode해 바이트를 비교한다(requireCanonical(bytes, encodeOperation(record))). 그래서 "파싱은 되지만 우리가 쓰지 않았을 형태"가 전부 거부된다 — 공백, 필드 재배열, 이스케이프, -0·선행 0 같은 숫자 표기, 후행 콘텐츠.
FileserverControlRecordCodec 참조 위치
:::evidence key="adapter-outbound-fileserver-c02" alt="코드베이스에서 FileserverControlRecordCodec 를 검색한 출력 12줄. 이 기록이 세는 참조가 그 출력에 그대로 보인다." caption="FileserverControlRecordCodec 코드베이스 검색 — 12줄 · exit 0" zoom="true" :::
파서 자체도 좁다
- 필드 집합을 정확히 일치시킨다(
values.keySet().equals(allowedFields)) — 누락도 미지 필드도 거부 - 중복 키를 거부한다(
putIfAbsent) - UTF-8 디코딩이
REPORT모드라 malformed 바이트가 대체문자로 조용히 바뀌지 않는다 \b \f \n \r \t이스케이프를 문법 수준에서 거부한다("control characters are forbidden")- 짝 없는 서로게이트를 거부한다(
requireWellFormedUnicode) Instant.parse후result.toString().equals(value)로 canonical UTC 표기만 받는다- receipt snapshot은
rsv1.접두사 + unpadded base64url이고, 디코딩 후 재인코딩 문자열 비교로 alias(후행 비트가 0이 아닌 변형)를 거부한다
오버플로가 상한 검사를 무력화하지 못한다
requireFormulaCountWithinCells가 rowCount * columnCount 곱을 하기 전에 rowCount <= Long.MAX_VALUE / columnCount를 먼저 본다. test가 그 하나하나를 이름으로 고정한다 — canonicalDecoderRejectsWhitespaceReorderingEscapesNumbersUtf8AndTrailingContent, receiptSnapshotRejectsBase64urlAliasWithNonZeroTrailingBits, canonicalCodecRoundTripsSupplementaryUnicodeInOpaqueText, formulaMitigationCountCannotExceedCellsAndUsesOverflowSafeBounds.